JP6140585B2 - Internal gear machining machine and internal gear machining method - Google Patents

Internal gear machining machine and internal gear machining method Download PDF

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Publication number
JP6140585B2
JP6140585B2 JP2013193804A JP2013193804A JP6140585B2 JP 6140585 B2 JP6140585 B2 JP 6140585B2 JP 2013193804 A JP2013193804 A JP 2013193804A JP 2013193804 A JP2013193804 A JP 2013193804A JP 6140585 B2 JP6140585 B2 JP 6140585B2
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cutter
axis
gear
rotation axis
internal gear
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JP2015058505A (en
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吉言 ▲柳▼瀬
吉言 ▲柳▼瀬
光一 増尾
光一 増尾
政志 越智
政志 越智
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三菱重工工作機械株式会社
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23FMAKING GEARS OR TOOTHED RACKS
    • B23F5/00Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
    • B23F5/12Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting
    • B23F5/16Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
    • B23F5/163Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof the tool and workpiece being in crossed axis arrangement, e.g. skiving, i.e. "Waelzschaelen"

Description

  The present invention relates to an internal gear machining machine and an internal gear machining method capable of canceling the inclination of a pinion cutter and performing gear cutting on an internal gear.

  2. Description of the Related Art Conventionally, a gear machining machine has been provided as a gear that cuts a gear into a workpiece using a pinion cutter. Such a gear machining machine is used when gearing a workpiece such as an internal gear that is difficult to machine with a hob that is a gear cutting tool like a pinion cutter. 1 is disclosed.

JP 2012-218100 A

  Here, in the conventional gear processing machine, when cutting the workpiece, the pinion cutter is rotated around the cutter rotation axis, but the cutter rotation axis is caused by factors such as the assembly error of the machine. It may tilt in an unintended direction. In this way, if gear cutting is performed in a state where the cutter rotation axis that is the rotation center of the pinion cutter is inclined in an unintended direction, the processing accuracy is reduced.

  In order to solve the above problem, it is conceivable to provide a gear processing machine with an inclination angle adjusting mechanism capable of adjusting the inclination angle of the cutter rotation shaft. It is not considered.

  Accordingly, the present invention solves the above-described problem, and an internal gear machining machine and an internal gear capable of performing high-precision machining by canceling the inclination angle generated in the cutter rotation shaft using the existing configuration. An object is to provide a processing method.

According to the internal gear processing machine according to the first invention for solving the above-mentioned problems,
By incising and feeding the gear-like cutter while meshing and rotating the workpiece internal gear rotatable around the workpiece rotation axis and the gear-like cutter rotatable around the cutter rotation axis. In the internal gear processing machine for cutting the internal gear to be processed by the gear-shaped cutter,
Cutter cutting means for moving the gear-shaped cutter in a cutting axis direction orthogonal to the workpiece rotation axis direction;
Cutter lateral movement means for moving the gear-shaped cutter in a horizontal axis direction orthogonal to the cutting axis direction and the cutter rotation axis direction;
Cutter feed means for moving the gear-shaped cutter in a feed axis direction parallel to the workpiece rotation axis direction;
Turning means for turning the cutter rotation axis around a cutter turning axis extending in a cutting axis direction, and giving an axis crossing angle between the cutter rotation axis and the workpiece rotation axis;
Detecting means for detecting an inclination angle with respect to a first plane including a horizontal axis and a feed axis in the cutter rotation axis given the axis crossing angle;
Prior to gear cutting by said cutter cutting means and the cutter lateral movement means and the cutter feed means, the gear-shaped cutter, depending on the inclination angle detected by the detection means, parallel move in a horizontal plane Then , the meshing position of the gear-shaped cutter with the workpiece internal gear is shifted in the circumferential direction of the gear-shaped cutter.

According to the internal gear machining machine according to the second invention for solving the above-mentioned problems,
Forming the gear-shaped cutter into a cylindrical shape;
The clearance angle is given to the meshing position in the gear-like cutter in which the cutter rotation axis is translated.

According to the internal gear machining method according to the third invention for solving the above-mentioned problems,
The internal gear to be machined that can rotate around the workpiece rotation axis and the gear-like cutter that can rotate around the cutter rotation axis are meshed with each other and rotated synchronously. Prior to cutting the internal gear to be machined by the gear-shaped cutter, by providing incision in the incision axis direction and feed in the feed axis direction parallel to the workpiece rotation axis direction,
Turning the cutter rotation axis to give an axis crossing angle between the cutter rotation axis and the workpiece rotation axis;
Detecting the inclination angle with respect to the first plane including the cutting axis direction and the horizontal axis perpendicular to the cutter rotation axis direction and the feed axis in the cutter rotation axis given the axis crossing angle;
The gear-shaped cutter, depending on the tilt angle, characterized in that in parallel move in a horizontal plane, the engagement position between the internal gear to be machined in the gear-shaped cutter, shifted in the circumferential direction of the gear-shaped cutter And

Accordingly, in accordance with the internal gear processing machine and the internal gear machining method according to the present invention, prior to the gear cutting, the gear-shaped cutter, according to the inclination angle of the cutter rotary shaft, parallel move in a horizontal plane, By shifting the meshing position of the gear-shaped cutter with the internal gear to be machined in the circumferential direction, even if an inclination angle is generated on the cutter rotation shaft due to factors such as assembly errors of the machine, the inclination angle is not changed. It is possible to perform high-accuracy processing by using and canceling.

1 is an overall perspective view of an internal gear processing machine according to an embodiment of the present invention. It is the perspective view which showed the internal gear processing method which concerns on one Example of this invention. It is the figure which showed a mode that the cutter rotating shaft of a pinion cutter inclines with respect to a YZ plane. (A) The top view which showed a mode that the workpiece | work is geared with the pinion cutter by which the cutter rotating shaft was arrange | positioned in the reference | standard position, (b) is the II arrow sectional drawing of the same figure (a). (A) The top view which showed a mode that the workpiece | work is geared with the pinion cutter by which the cutter rotating shaft was arrange | positioned in the offset position, (b) is the II-II arrow sectional drawing of the same figure (a). FIG. 6 is a cross-sectional view taken along the line III-III in FIG. 5, showing a state where a clearance angle is given to the pinion cutter.

  Hereinafter, an internal gear machining machine and an internal gear machining method according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, on a bed 11 of an internal gear processing machine (for example, a gear shaper) 1, a column (cutter cutting means) 12 is movable in the horizontal X-axis direction (cutting axis direction). It is supported. A saddle (cutter feeding means) 13 is supported on the front surface of the column 12 so as to be movable up and down in a vertical Z-axis direction (feed axis direction) orthogonal to the X-axis direction. Further, on the front surface of the saddle 13, a turning head (turning means, axis crossing angle setting means) 14 is supported so as to be turnable around a cutter turning axis A extending in the X-axis direction.

  In addition, on the front surface of the swivel head 14, a slide head (cutter lateral movement means) 15 moves in the Y-axis direction (horizontal axis direction) which is the lateral direction of the internal gear machining machine 1 (hereinafter referred to as the machine lateral direction). Supported as possible. Further, a cutter head 16 is formed at the front portion of the slide head 15 so as to bulge out from the slide head 15 in a semicircular shape. In the cutter head 16, a main shaft 16a is supported so as to be rotatable around a cutter rotation axis B orthogonal to the X-axis and Y-axis directions. A cylindrical pinion cutter ( A gear-like cutter) 17 is detachably mounted.

  On the other hand, on the front side of the column 12 on the bed 11, a rotary table (work rotating means) 18 is supported so as to be rotatable around a work rotation axis C extending in the Z-axis direction. A cylindrical mounting jig 19 is attached to the upper surface of the rotary table 18, and a work (working internal gear) W is detachably attached to the inner peripheral surface of the upper end of the mounting jig 19. Has been. When the workpiece W is mounted on the mounting jig 19, the center of the workpiece W is coaxial with the workpiece rotation axis C of the rotary table 18.

  Therefore, by driving the column 12 and the saddle 13, the pinion cutter 17 can be cut in the X-axis direction and fed in the Z-axis direction. Further, by driving the slide head 15, the pinion cutter 17 can be laterally moved in the Y-axis direction. The pinion cutter 17 can be rotated about the B axis by rotating the main shaft 16a of the cutter head 16, while the work W is rotated about the work rotation axis C by rotating the rotary table 18. Can be made.

  Further, as shown in FIGS. 1 and 2, by turning the turning head 14 around the cutter turning axis A, the turning angle of the cutter rotation axis B serving as the rotation center of the main shaft 16 a and the pinion cutter 17 can be changed. it can. As a result, the axis crossing angle Σ between the cutter rotation axis B and the work rotation axis C can be adjusted, and this axis crossing angle Σ can be adjusted according to the torsion angle of the workpiece W or the like. ing.

  That is, the axis intersection angle Σ is an intersection angle formed by the cutter rotation axis B and the workpiece rotation axis C in the YZ plane (first plane, vertical plane) including the Y axis and the Z axis. Therefore, the pinion cutter 17 at the time of gear cutting rotates around the cutter rotation axis B that intersects the workpiece rotation axis C of the workpiece W at the axis crossing angle Σ.

  As described above, since the swivel head 14 can be swiveled around the cutter swivel axis A, only the cutter rotation axis B serving as the rotation center of the main shaft 16a and the pinion cutter 17 is associated with the swivel operation of the swivel head 14. In addition, the moving direction of the slide head 15 supported by the turning head 14 also turns (tilts).

  That is, regardless of the turning angle of the cutter rotation axis B, the pinion cutter 17 moves in the Y-axis direction, which is the horizontal direction of the machine (the width direction of the slide head 17). The rotation axis B is always arranged so as to be orthogonal to the X-axis and Y-axis directions. Among them, when the turning angle of the cutter rotation axis B is 0 °, the Y-axis direction is orthogonal to the X-axis and Z-axis directions, and the cutter rotation axis B extends in the Z-axis direction. (It becomes parallel to the workpiece rotation axis C).

  Here, as described above, the cutter rotation axis B of the pinion cutter 17 turns in the YZ plane, but due to factors such as assembly errors of each component in the internal gear machining machine 1, the cutter rotation is performed. The axis B may not be parallel to the YZ plane. That is, the cutter rotation axis B may be inclined (crossed) with respect to the YZ plane. In such a state, if the workpiece W is cut by the pinion cutter 17, the processing accuracy may be reduced.

  Therefore, in the internal gear machining machine 1 according to the present invention, prior to the gear cutting, the inclination angle φ with respect to the YZ plane in the cutter rotation axis B is detected, and the inclination angle φ of the pinion cutter 17 is canceled. Place in position.

  Specifically, as shown in FIG. 3, the internal gear machining machine 1 has a detection function (detection means, detector) that detects the inclination angle φ of the cutter rotation axis B with respect to the YZ plane. Although details will be described later, first, in the internal gear machining machine 1, according to the detected inclination angle φ, the offset position Pb (X-axis coordinate: Xb, Y-axis coordinates: Yb) are set in the XY plane (second plane, horizontal plane) including the X-axis and Y-axis. Next, the pinion cutter 17 is horizontally moved in the XY plane so that the cutter rotation axis B passes through the offset position Pb.

  As described above, the cutter rotation axis B inclined at the inclination angle φ with respect to the YZ plane can be rotated around the cutter rotation axis B by translating in the XY plane according to the inclination angle φ. The pinion cutter 17 can be meshed with the workpiece W with the inclination angle φ canceled.

  Next, operation | movement of the internal gear processing machine 1 is demonstrated using FIG. 2 thru | or FIG.

  First, the pinion cutter 17 is turned around the cutter turning axis A, and an axis crossing angle Σ is given to the cutter rotation axis B. Next, as shown in FIG. 3, the pinion cutter 17 is moved in the X-axis, Y-axis, and Z-axis directions, and arranged in a detectable region where the inclination angle φ can be detected. Then, the inclination angle φ of the cutter rotation axis B with respect to the YZ plane is detected.

  Here, when the detected inclination angle φ is 0 °, since the cutter rotation axis B of the pinion cutter 17 is parallel to the YZ plane, the gear cutting start position of the pinion cutter 17 in the XY plane is determined. Cut gear without changing.

  That is, as shown in FIG. 4, the pinion cutter 17 is moved in the X-axis, Y-axis, and Z-axis directions. Thereby, the pinion cutter 17 meshes with the workpiece W in a state where the axis crossing angle Σ is given.

  At this time, the pinion cutter 17 has a reference position Pa (X-axis coordinates: Xa, Y-axis coordinates: the cutter rotation axis B is the coordinate origin of the center position of the workpiece W (work rotation axis C) in the XY plane. Ya). Further, the meshing position 17a of the pinion cutter 17 arranged at the reference position Pa with the workpiece W passes through the center position (workpiece rotation axis C) and the reference position Pa (cutter rotation axis B) of the workpiece W in the XY plane. It is arranged on a straight line (on the X axis).

  Next, the pinion cutter 17 is rotated around the cutter rotation axis B and the workpiece W is rotated around the workpiece rotation axis C from the meshed state described above. Then, the pinion cutter 17 is provided with cutting in the X-axis direction and feeding in the Z-axis direction. That is, the pinion cutter 17 and the workpiece W are meshed and rotated synchronously, and the pinion cutter 17 is reciprocated in the Z-axis direction while being stepped in the X-axis direction.

  In the pinion cutter 17 that reciprocates in the Z-axis direction, the workpiece W is cut off when moving downward, while the workpiece W is separated from the workpiece W in the X-axis direction when moving upward. No gear cutting for W is performed.

  As a result, a large slip occurs between the pinion cutter 17 and the workpiece W, and the internal teeth of the workpiece W are cut by the blade surface (tooth surface) of the pinion cutter 17.

  On the other hand, when the detected inclination angle φ exceeds 0 °, the cutter rotation axis B of the pinion cutter 17 is not parallel to the YZ plane, and therefore the pinion cutter 17 in the XY plane is prior to gear cutting. After changing the gear cutting start position, gear cutting is performed.

  That is, as shown in FIGS. 2 and 5, the pinion cutter 17 is moved in the X-axis, Y-axis, and Z-axis directions. Thereby, the pinion cutter 17 meshes with the workpiece W in a state where the axis crossing angle Σ is given.

  At this time, the pinion cutter 17 is disposed so that the cutter rotation axis B passes through the offset position Pb with the center position of the workpiece W (work rotation axis C) as the coordinate origin in the XY plane. Further, the meshing position 17b of the pinion cutter 17 arranged at the offset position Pb with the workpiece W passes through the center position (workpiece rotation axis C) and the offset position Pb (cutter rotation axis B) of the workpiece W in the XY plane. It is arranged on a straight line and is shifted from the meshing position 17 a in the circumferential direction of the pinion cutter 17.

  That is, the cutter rotation axis B inclined at the inclination angle φ at the reference position Pa is translated from the reference position Pa to the offset position Pb in the XY plane, and the meshing position of the pinion cutter 17 with the workpiece W is meshed. By shifting the position 17a to the meshing position 17b, the meshing direction on the XY plane between the pinion cutter 17 and the work W is changed from the center position of the work W and the reference axis direction passing through the reference position Pa to the center position of the work W. And the offset axis direction passing through the offset position Pb is changed.

  Further, as shown in FIG. 6, the cutter rotating shaft B is arranged at the offset position Pb, and the meshing position in the pinion cutter 17 is shifted to the meshing position 17b, so that the lower end side of the meshing position 17b is the workpiece W. Engage with each other and move away toward the upper end. That is, the clearance angle θ is given to the meshing position 17 b in the pinion cutter 17.

  Next, the pinion cutter 17 is rotated around the cutter rotation axis B and the workpiece W is rotated around the workpiece rotation axis C from the meshed state described above. Then, the pinion cutter 17 is provided with cutting in the X-axis direction and feeding in the Z-axis direction. That is, the pinion cutter 17 and the workpiece W are meshed and rotated synchronously, and the pinion cutter 17 is reciprocated in the Z-axis direction while being stepped in the X-axis direction.

  In the pinion cutter 17 that reciprocates in the Z-axis direction, the workpiece W is cut off when moving downward, while the workpiece W is separated from the workpiece W in the X-axis direction when moving upward. No gear cutting for W is performed.

  As a result, a large slip occurs between the pinion cutter 17 and the workpiece W, and the internal teeth of the workpiece W are cut by the blade surface (tooth surface) of the pinion cutter 17.

  Therefore, prior to gear cutting, the pinion cutter 17 is arranged so that the cutter rotation axis B translates in the XY plane according to the inclination angle φ of the cutter rotation B, and the workpiece W in the pinion cutter 17 is arranged. By shifting the meshing position in the circumferential direction, even if an inclination angle φ occurs in the cutter rotation axis B due to factors such as assembly errors of the machine, the inclination angle φ is canceled using the existing configuration, High-precision processing can be performed.

  Further, by disposing the cutter rotating shaft B at the offset position Pb and shifting the meshing position in the pinion cutter 17 to the meshing position 17b, a clearance angle θ can be given to the meshing position 17b in the pinion cutter 17. Thereby, even if the cylindrical pinion cutter 17 is used, the clearance angle θ can be easily given, and there is no need to use a tapered pinion cutter.

  The present invention is applicable to an internal gear processing machine that processes an internal gear to be processed with a shaving cutter and a barrel-shaped threaded grindstone.

DESCRIPTION OF SYMBOLS 1 Internal gear processing machine 11 Bed 12 Column 13 Saddle 14 Turning head 15 Slide head 16 Cutter head 16a Main shaft 17 Pinion cutter 17a, 17b Engagement position 18 Rotary table 19 Mounting jig W Work A Cutter turning axis B Cutter rotation axis C Work rotation Axis Σ Axis crossing angle φ Inclination angle θ Clearance angle Pa Reference position Pb Offset position

Claims (3)

  1. By incising and feeding the gear-like cutter while meshing and rotating the workpiece internal gear rotatable around the workpiece rotation axis and the gear-like cutter rotatable around the cutter rotation axis. In the internal gear processing machine for cutting the internal gear to be processed by the gear-shaped cutter,
    Cutter cutting means for moving the gear-shaped cutter in a cutting axis direction orthogonal to the workpiece rotation axis direction;
    Cutter lateral movement means for moving the gear-shaped cutter in a horizontal axis direction orthogonal to the cutting axis direction and the cutter rotation axis direction;
    Cutter feed means for moving the gear-shaped cutter in a feed axis direction parallel to the workpiece rotation axis direction;
    Turning means for turning the cutter rotation axis around a cutter turning axis extending in a cutting axis direction, and giving an axis crossing angle between the cutter rotation axis and the workpiece rotation axis;
    Detecting means for detecting an inclination angle with respect to a first plane including a horizontal axis and a feed axis in the cutter rotation axis given the axis crossing angle;
    Prior to gear cutting by said cutter cutting means and the cutter lateral movement means and the cutter feed means, the gear-shaped cutter, depending on the inclination angle detected by the detection means, parallel move in a horizontal plane Then , the internal gear machining machine, wherein the meshing position of the gear-shaped cutter with the workpiece internal gear is shifted in the circumferential direction of the gear-shaped cutter.
  2. The internal gear machining machine according to claim 1,
    Forming the gear-shaped cutter into a cylindrical shape;
    An internal gear machining machine, wherein a clearance angle is given to a meshing position in the gear-like cutter in which the cutter rotation shaft is translated.
  3. The internal gear to be machined that can rotate around the workpiece rotation axis and the gear-like cutter that can rotate around the cutter rotation axis are meshed with each other and rotated synchronously. Prior to cutting the internal gear to be machined by the gear-shaped cutter, by providing incision in the incision axis direction and feed in the feed axis direction parallel to the workpiece rotation axis direction,
    Turning the cutter rotation axis to give an axis crossing angle between the cutter rotation axis and the workpiece rotation axis;
    Detecting the inclination angle with respect to the first plane including the cutting axis direction and the horizontal axis perpendicular to the cutter rotation axis direction and the feed axis in the cutter rotation axis given the axis crossing angle;
    The gear-shaped cutter, depending on the tilt angle, characterized in that in parallel move in a horizontal plane, the engagement position between the internal gear to be machined in the gear-shaped cutter, shifted in the circumferential direction of the gear-shaped cutter An internal gear machining method.
JP2013193804A 2013-09-19 2013-09-19 Internal gear machining machine and internal gear machining method Active JP6140585B2 (en)

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JP2013193804A JP6140585B2 (en) 2013-09-19 2013-09-19 Internal gear machining machine and internal gear machining method
CN201480051530.7A CN105636732B (en) 2013-09-19 2014-06-09 Interior bracing equipment and interior bracing method
PCT/JP2014/065175 WO2015040899A1 (en) 2013-09-19 2014-06-09 Internal-gear machining device and internal-gear machining method
KR1020167007123A KR20160044024A (en) 2013-09-19 2014-06-09 Internal-gear machining device and internal-gear machining method
US15/022,789 US20160228961A1 (en) 2013-09-19 2014-06-09 Internal-gear machining device and internal-gear machining method
TW103126270A TWI584895B (en) 2013-09-19 2014-07-31 Internal gear machining machinery and internal gear machining method

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US20160228961A1 (en) 2016-08-11
TWI584895B (en) 2017-06-01
KR20160044024A (en) 2016-04-22
CN105636732B (en) 2017-08-25
WO2015040899A1 (en) 2015-03-26
JP2015058505A (en) 2015-03-30
CN105636732A (en) 2016-06-01

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